There are two different designs for this project: a “smaller cube” for our 2mm pitch 64x64 matrices, or “bigger cube” for 2.5mm matrices with curb-cut frames. The 2mm design is particularly challenging, not just for its size, but because the stock frames must be carefully removed from the matrices and replaced with our 3D-printed design. Skim through the steps and take some time to reflect on your personal degree of patience and kit-building skill.

Once you choose a design and have parts ordered, you can start on the 3D printing, which might take several days to complete. The next few pages discuss the 3D parts…but if the printer’s still working, you can skip ahead to get started on the electronics, then return to this section later.

WiFi LoRa 32 is a classic IoT dev-board designed & produced by Heltec Automation. Since its launch in 2017, it has been loved by developers and makers. The newly launched V3 version has the same pin sequence as the V2 version and retains Wi-Fi, BLE, LoRa, OLED display, and other functions.

It is the best option for smart cities, farms, homes, industrial control, house security, wireless meter reading, and IoT developers.